397367960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{903109}}^1$

素因数の和:903131

約数の個数: 32

約数和(自身を含む): 975358800

約数和(自身を除く): 577990840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 903109, 1806218, 3612436, 4515545, 7224872, 9031090, 9934199, 18062180, 19868398, 36124360, 39736796, 49670995, 79473592, 99341990, 198683980, 397367960]

約数ペア:

[(1, 397367960), (2, 198683980), (4, 99341990), (5, 79473592), (8, 49670995), (10, 39736796), (11, 36124360), (20, 19868398), (22, 18062180), (40, 9934199), (44, 9031090), (55, 7224872), (88, 4515545), (110, 3612436), (220, 1806218), (440, 903109)]